Well considering you don't have a spare tire, it would seem you need a run-flat. www.tirerack.com might be of help. I put Cooper Zenon tires on mine and carry a 12 volt compressor and cans of fix-o-flat. Car is extremely quiet and tires were under $800. You also can carry a small jack in the middle rear storage compartment
Some are good, some are not.
Dunlop tires are good for some things but it all depends on what you are going to use them for
Cheap tires that are good tires is a misnomer. You get what you pay for. But you can get inexpensive tires that are pretty good tires. Walmart & Sam's Club has some good bargains at times on good tires. Watch for sales on tires in your area. Pep Boys also has good sale prices. Tire Rack is a good source of reviews on tires. There are a few brands that you can look for Uniroyal, Hankook, Kelly, Starfire, Kumho to name a few are brands that may not be the cheapest out there have developed a reputation for quality without being too expensive
Your local mechanic may have some good ones. Another option for good tires is when there are over supply sales. Meaning you can get a good price on tires and they will be better than used.
Replacements Limited is a good resource for potentially selling some of your china.
You can find the cheapest tires in your area by checking local retailers. In some areas the tire company will come to you to fit the tires and will supply good quality tires at a cheaper price than many garages.
A good tire rating website is tire-ratings.findthebest.com.They can provide you with some good information, such as tread life about the Hercules tires you want.
Many companies sell tires for trailers. Some popular brands of tires for trailers include Towmaster, Kumho, and Carlisle. Kumho tires have many good reviews and seem to last longer than some other brands of tires.
Since your tires are all season, they should be good. If you are worried they won't be, then it would be a good idea to buy some snow chains that can be put on your wheels without removing your tires.
It is possible to find good quality tires on Ebay. Do not buy them used, you will get the best deal on used but poor quality. When buying tires it is best to buy new. Ebay does have some great prices on new tires.
The Goodyear website would be a great place to buy good racing tires, as their tires are the official tires of NASCAR. Michelin and Bridgestone tires are also other possible alternatives to consider when buying decent racing tires. For custom tires, America's Tire would be a great company to search to buy racing tires.
Tirerack.com has a variety of tires for all sorts of cars and the ship them to you for a good price. Another good online site for tire purchases is tires-easy.com who has an array of tire sizes for a good price and the ship them to you.